CN117841632A - Glass guide groove - Google Patents

Abstract

The invention provides a glass run channel, which can restrain shaking sound generated by vibration of door glass when the door glass is closed or in high-speed running under a state that the door glass is slightly opened, and can ensure smooth sliding property (lifting property) of the door glass. A vehicle interior side seal lip (18, 19) protruding obliquely toward the vehicle exterior side wall is provided on the inner side surface side of the vehicle interior side wall (13), a vehicle exterior side seal lip (16) protruding obliquely toward the vehicle interior side wall is provided on the inner side surface side of the vehicle exterior side wall, both side surfaces of the door glass (4) are held in a sliding state by the distal end portions (16 b, 18b, 19 b) of the seal lips, the seal lips are formed in a straight line toward the vehicle exterior side wall and the vehicle interior side wall, and distal end surfaces (16 c, 18c, 19 c) of the distal end portions formed in a circular arc shape in cross section are formed to be slidable in line contact with both side surfaces of the door glass, and notch portions (17, 20, 21) capable of tilting toward the vehicle interior side wall and the respective inner side surfaces of the vehicle exterior side wall are formed, respectively.

Description

Glass guide groove

Technical Field

The present invention relates to an improvement of a glass run channel for sliding and guiding door glass, which is mounted on an inner peripheral portion of a door panel (window frame portion) of an automobile for opening and closing a vehicle body opening.

Background

As known, the following patent document 1 discloses a glass run as such a conventional glass run.

The glass run 30 is attached to a door body or a door sash of an automobile door, and as shown in fig. 12, has a bottom wall 31, an outer side wall 32 and an inner side wall 33 extending in a substantially vertical direction from both end edges in the width direction of the inner side and the outer side of the bottom wall 31, and is fitted and held in the door sash so as to press-fit into the door sash from the bottom wall 31 side and has a substantially channel-shaped cross section. Each of the lower end portions of the vehicle exterior side wall 32 and the vehicle interior side wall 33 is provided with 1 vehicle exterior seal lip 35 and 1 vehicle interior seal lip 36, respectively, which extend inward of the tunnel-like space and elastically contact both side surfaces of the door glass 34 to seal the space between the door glass 34.

A guide lip 37 having a distal end 37a in elastic contact with the vehicle inside side surface 34a of the distal end portion of the door glass 34 is provided on the inner bottom surface 31a of the bottom wall 31. The guide lip 37 is formed by bending in a substantially S-shaped cross section, and the center line X of the base 37b on the bottom wall 31 side is arranged on the vehicle outer side than the center line Y of the door glass 34, so that the entire guide lip is formed to be easily elastically deformed in the direction of the center line Y of the door glass 34. Therefore, the distal end portion 37a of the guide lip 37 can elastically contact the vehicle-interior side surface 34a of the distal end portion of the door glass 34 with an appropriate force, and can prevent rattling noise caused by vibration of the door glass 34 when the door glass 34 is closed in the half-open state while maintaining the sliding property of the door glass 34.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2007-8372 (FIG. 4)

Patent document 2: japanese patent laid-open No. 2021-24388

Disclosure of Invention

Problems to be solved by the invention

However, in the glass run channel 30 described in patent document 1, the guide lip 37 is provided to prevent rattling noise of the door glass 34 when the door glass 34 is closed in the half-open state, but only the guide lip 37 protrudes from the inner bottom surface 31a of the bottom wall 31, so that it is easy to flex in the vehicle interior-exterior direction around the base 37 b. Therefore, the reaction force of the door glass 34, particularly in the vehicle interior direction, at the time of closing the door cannot be effectively suppressed, and the occurrence of rattling cannot be sufficiently suppressed. Further, since only one of the vehicle interior seal lips 36 of the vehicle interior side wall 33 is provided, the reaction force of the door glass 34 in the vehicle interior direction at the time of closing the door cannot be sufficiently suppressed.

Accordingly, as in the glass run channel described in patent document 2, it is conceivable to provide 2 inboard seal lips on the distal end portion and the inboard surface of the inboard side wall, and to increase the force for suppressing the reaction force of the door glass in the vehicle interior direction when the door is closed, thereby suppressing the occurrence of rattling of the door glass.

However, these 2 inboard seal lips slide in a surface contact state while being deformed and deflected with respect to the side surfaces of the door glass when the door glass is lifted. Accordingly, the sliding frictional resistance between each of the vehicle interior seal lips and the side surface of the door glass increases, and there is a technical problem that smooth sliding properties (ascending and descending properties) of the door glass cannot be obtained.

The present invention has been made in view of the above-described problems of the conventional glass run channel, and an object of the present invention is to provide a glass run channel capable of suppressing rattling noise accompanying vibration of door glass when the door glass is closed or when the door glass is traveling at a high speed with the door glass slightly opened, and capable of ensuring smooth sliding properties (ascending and descending properties) of the door glass.

Means for solving the problems

The invention according to claim 1 of the present application is a glass run comprising a bottom wall, an inside side wall and an outside side wall provided at both end edges in a width direction of the bottom wall, at least 2 or more inside seal lips provided on an inside surface side of the inside side wall and projecting obliquely in a direction toward the outside side wall, and at least 1 or more outside seal lips provided on an inside surface side of the outside side wall and projecting obliquely in a direction toward the inside side wall, both side surfaces of a door glass entering in a direction toward the bottom wall being supported in a sliding state by an end portion of each of the inside seal lips and an end portion of the outside seal lips,

the vehicle interior side seal lip and the vehicle exterior side seal lip are formed in a straight line toward the vehicle exterior side wall and the vehicle interior side wall, respectively, and end surfaces of the end portions formed in a circular arc shape in cross section are slidable on both side surfaces of the door glass in a line contact state, and thin wall portions capable of tilting the vehicle interior side seal lip and the vehicle exterior side seal lip toward the inner side surface of the vehicle interior side wall and the inner side surface of the vehicle exterior side wall are formed at the respective base end portions joined to the vehicle interior side wall and the vehicle exterior side wall, respectively.

According to the aspect of the present invention, the door glass is supported by the vehicle outside seal lip and, for example, 2 vehicle inside seal lips, and particularly, the vehicle outside seal lip and each vehicle inside seal lip are formed in a straight line, their respective distal end portions are not deformed by deflection, and the respective distal end surfaces of the respective distal end portions are abutted in a line contact state and a propped state. Therefore, the kinetic energy caused by the displacement in the vehicle interior direction and the vehicle exterior direction due to the vibration of the door glass caused by the pressure difference between the inside and the outside of the vehicle when the door glass is closed or when the vehicle is traveling at high speed in the half-open state of the door glass can be effectively absorbed. As a result, the occurrence of abnormal noise due to the shake of the door glass can be suppressed.

Further, since the vehicle exterior seal lip and the vehicle interior seal lip swing from the end surfaces thereof in a line contact state with the both side surfaces of the door glass, the sliding frictional resistance is reduced, and smooth sliding property of the door glass can be obtained.

Effects of the invention

According to the present invention, it is possible to suppress the occurrence of abnormal noise caused by shake accompanying vibration of the door glass when the door glass is closed or when the door glass is traveling at a high speed in a slightly opened state, and to obtain smooth sliding properties (ascending and descending properties) of the door glass.

Drawings

Fig. 1 is a side view showing a front door of an automobile in which a glass run according to an embodiment of the present invention is assembled.

Fig. 2 is a front view showing a glass run channel according to embodiment 1, which is simply seen from the outside of the vehicle.

Fig. 3 is a sectional view taken along line A-A showing a longitudinal frame portion on the rear side of the window frame portion of fig. 1.

Fig. 4 is a cross-sectional view showing a state in which the door glass enters the glass run channel of the present embodiment.

Fig. 5 is a cross-sectional view showing the contact position of the door glass with respect to the vehicle outside seal lip and the vehicle inside seal lip in a state in which the door glass entering the glass run channel slightly vibrates in the vehicle inside-outside direction.

Fig. 6 is a cross-sectional view showing a state in which the door glass entering the glass run channel is greatly vibrated and the vehicle outside seal lip and the vehicle inside seal lip are maximally tilted.

Fig. 7 is a characteristic diagram showing the results of experiments performed by the inventors of the present application on the relationship between the reaction force against the door glass and the fitting, with the inclination angles of the vehicle outside seal lip and the vehicle inside seal lip changed.

Fig. 8 is a cross-sectional view showing a glass run according to embodiment 2 of the present invention.

Fig. 9 is a cross-sectional view showing a state in which the door glass enters the glass run channel of the present embodiment.

Fig. 10 is a cross-sectional view showing the contact position of the door glass with respect to the vehicle outside seal lip and the vehicle inside seal lip in a state in which the door glass entering the glass run channel slightly vibrates in the vehicle inside-outside direction.

Fig. 11 is a sectional view showing a state in which the door glass entered into the glass run channel vibrates and the outside seal lip and the inside seal lip are most inclined.

Fig. 12 is a cross-sectional view showing a conventional glass run.

Detailed Description

Hereinafter, embodiments of the glass run according to the present invention will be described in detail with reference to the drawings. In the present embodiment, a case where the glass run is applied to a window frame portion of a front door as a press-formed door mounted in an automobile is shown.

Fig. 1 is a side view of a front door of an automobile incorporating a glass run channel according to the present embodiment, and fig. 2 is a front view of the glass run channel according to the present embodiment, which is simply seen from the outside of the automobile.

As shown in fig. 1, a sash 3 having a cross section of approximately is formed by roll forming at an upper end portion of a door body 2 of a front door 1 on the left side of an automobile. A window opening is formed by the window frame 3 and the upper edge of the door body 2, and a glass run 5 for guiding the door glass 4 up and down is installed at the inner periphery of the window opening and the inside of the door body 2. The glass run according to the present invention can be applied to a front door 1 on the left side, a front door on the right side, or a left and right rear door.

As shown in fig. 2, the glass run 5 according to embodiment 1 is constituted by a 1 st press-formed portion 6 corresponding to the lateral frame portion of the window frame portion 3, a 2 nd press-formed portion 7 corresponding to the front side longitudinal frame portion of the front door 1, and a 3 rd press-formed portion 8 corresponding to the rear side longitudinal frame portion. The front end portion of the 1 st extrusion part 6 and the upper end portion of the 2 nd extrusion part 7 are joined by the 1 st type extrusion part 9, and the rear end portion of the 1 st extrusion part 6 and the upper end portion of the 3 rd extrusion part 8 are joined by the 2 nd type extrusion part 10.

Fig. 3 is a sectional view taken along line A-A of a vertical frame portion on the rear side of the window frame portion in fig. 1, fig. 4 is a sectional view showing a state in which door glass enters the glass run channel of the present embodiment, fig. 5 is a sectional view showing a contact position between an outside seal lip and an inside seal lip with respect to the door glass in a state in which the door glass entering the glass run channel slightly vibrates in the in-vehicle direction, and fig. 6 is a sectional view showing a state in which the door glass entering the glass run channel greatly vibrates and the outside seal lip and the inside seal lip are most inclined.

As shown in fig. 3 and 4, the glass run 5 is formed of a dynamic cross-linked thermoplastic elastomer (TPV) and has a substantially cross-section (channel shape) and includes a flat bottom wall 11, and an outside side wall 12 and an inside side wall 13 connected to both ends of the bottom wall 11 in the width direction. A pair of groove portions 14a, 14b that can be unfolded in a free state by the vehicle exterior side wall 12 and the vehicle interior side wall 13 are formed inside the connection portions between the both ends in the width direction of the bottom wall 11 and the vehicle exterior side wall 12 and the vehicle interior side wall 13. The length L and the wall thickness W in the width direction of the vehicle interior side wall 13 are formed larger than the length L and the wall thickness W in the width direction of the vehicle exterior side wall 12, and are formed in an asymmetric shape with respect to the vehicle exterior side wall 12.

The inner bottom surface 11a of the bottom wall 11, which is a contact surface with the door glass 4, is formed to be substantially flat, and a lip 15, which is elastically brought into contact with the inner surface of the window frame portion 3 to seal, is provided so as to protrude from a connection position with the vehicle inside side wall 13 of the outer surface.

The vehicle exterior side wall 12 is integrally provided with 1 vehicle exterior seal lip 16 at a distal end portion 12b located on the opposite side of the bottom wall 11 in the width direction. The thickness W1 of the vehicle exterior seal lip 16 is relatively large and linearly protrudes, and in a free state shown in fig. 3, which is not in contact with the one side surface 4a of the door glass 4, protrudes obliquely while rising toward the bottom wall 11 toward the inner side surface 13a of the vehicle interior side wall 13. The inclination angle θ of the vehicle exterior seal lip 16 is set in the range of 65 degrees to 75 degrees with respect to the traveling direction line Z of the door glass 4 in the free state, and is set to about 70 degrees in the present embodiment.

The distal end surface 16c of the vehicle-outside seal lip 16 is formed in an arc shape having a small radius of curvature.

A notch portion 17 as a thin portion is formed in the base end portion 16a of the vehicle outside seal lip 16, and the notch portion 17 allows the door glass 4 to tilt in the direction of the vehicle outside side wall 12 by the pressing force transmitted from the side surface 4a during lifting and lowering.

The contact surface 16d of the vehicle-outside seal lip 16 is formed in an arc shape along the extending direction, and the contact surface 16d extends in the direction of the distal end surface 16c of the distal end portion 16b from a position on the opposite side of the base portion 16a from the forming position of the notch portion 17 so as to be capable of coming into contact with the one side surface 4a of the door glass 4. The arc-shaped contact surface 16d is in contact with the one side surface 4a of the door glass 4 in a line contact state, and the radius of curvature thereof is set to about 40R in the present embodiment. Here, 40R represents a radius of 40mm, and the basis for determining the value of the radius of curvature is based on the experimental results of the inventors of the present application described later.

The vehicle exterior side wall 12 includes a 1 st holding projection 12c that is held in contact with the inner surface of the window frame 3 on the outer surface of a connecting portion connected to one end portion of the bottom wall 11, and a 2 nd holding projection 12d that is fitted and held to the distal end portion 3a of the one side wall of the window frame 3 that is bent in a folded shape on the outer surface of the distal end portion 12 b. Further, on the inner surface of the distal end portion 12b, a support lip 12e is provided that abuts against and supports one side surface 4a of the door glass 4 when the door glass 4 is excessively moved in the vehicle exterior direction. A wave-shaped convex portion 12f is formed on the inner side surface 12a of the vehicle outside side wall 12, and the vehicle outside seal lip 16 is brought into contact with the convex portion 12f when excessively tilting toward the inner side surface 12a by the pressing force of the door glass 4.

As shown in fig. 3 and 4, the vehicle interior side wall 13 is provided with 2 vehicle interior seal lips 18, 19 at predetermined positions of the inner side surface 13a and the distal end portion 13b located on the opposite side of the bottom wall 11 in the width direction. The 21 st and 2 nd vehicle interior seal lips 18 and 19 are formed so that the wall thickness W2 is substantially the same and greater than the wall thickness W1 of the vehicle exterior seal lip 16, and rigidity is further improved. The inner seal lips 18, 19 are formed in a straight line, and protrude obliquely while rising toward the bottom wall 11 toward the inner side surface 12a of the outer side wall 12 in a free state of not abutting against the other side surface 4b of the door glass 4. The inclination angles θ and θ of the respective vehicle interior side seal lips 18 and 19 are set in the range of about 65 degrees to 75 degrees with respect to the traveling direction line Z of the door glass 4 in the free state shown in fig. 3, and are set to about 70 degrees in the present embodiment, similarly to the above-described vehicle exterior side seal lip 16.

The distal end surfaces 18c, 19c of the distal end portions 18b, 19b of the vehicle interior side seal lips 18, 19 are formed in an arc shape having a small radius of curvature.

Each of the vehicle interior seal lips 18, 19 is formed with 2 recessed portions 20, 21 as thin wall portions at the respective base end portions 18a, 19a, and these 2 recessed portions 20, 21 allow tilting toward the inner side surface 13a of the vehicle interior side wall 13 by the pressing force transmitted from the other side surface 4b of the door glass 4 at the time of entry.

The respective vehicle interior sealing lips 18, 19 are formed in an arc shape along the extending direction from positions of the base end portions 18a, 19a opposite to the forming positions of the recess portions 20, 21 toward the respective distal end surfaces 18c, 19c of the distal end portions 18b, 19b, respectively, so that the respective contact surfaces 18d, 19d can come into contact with the other side surface 4b of the door glass 4. The abutment surfaces 18d, 19d abut against the other side surface 4d of the door glass 4 in a line contact state, and the radius of curvature thereof is set to about 40R similarly to the abutment surface 16d of the vehicle outside seal lip 16. As described above, 40R means a radius of 40mm.

As shown in fig. 6, the vehicle interior seal lips 18 and 19 are provided separately at positions that do not interfere with each other even when the door glass 4 is tilted toward the inner side surface 13a by excessive pressing force from the other side surface 4b.

The vehicle interior side wall 13 has 2 holding lips 13c and 13d respectively abutting against the inner surface of the window frame 3 protruding in the vicinity of one end portion of the bottom wall 11 of the outer surface and closer to the distal end portion 13b side, and an engaging lip 13e engaging with the bent end portion 3b of the other side wall of the window frame 3 is provided on the outer surface of the distal end portion 13 b. On the inner side surface 13a of the vehicle interior side wall 13, wavy protruding portions 13f and 13g are formed, respectively, and the vehicle interior seal lips 18 and 19 abut against the protruding portions 13f and 13g when they excessively tilt toward the inner side surface 13a due to the pressing force of the door glass 4.

The reason why the inclination angle θ of each of the vehicle exterior side seal lip 16 and the vehicle interior side seal lips 18, 19 is set to about 70 degrees will be described specifically by the following technical effects.

[ technical Effect of glass run of the present embodiment ]

The technical effects of the glass run 5 according to the present embodiment will be described below with reference to fig. 4 to 7.

Fig. 7 is a characteristic diagram showing the results of experiments performed on the relationship between the reaction force (pressing force) against the door glass and the fitting by changing the inclination angles of the vehicle outside seal lip and the vehicle inside seal lip.

According to the glass run 5 of the present embodiment, as shown in fig. 4, the one side surface 4a and the other side surface 4b of the door glass 4 that enters the glass run 5 are slidably supported by 1 outside seal lip 16 and 2 inside seal lips 18, 19, and particularly the outside seal lip 16 and the inside seal lips 18, 19 are formed linearly, and the distal end portions 16b, 18b, 19b thereof are not deformed by deflection, but are abutted and supported in a state of line contact and propped against the distal end surfaces 16c, 18c, 19c of the distal end portions 16b, 18b, 19 b.

Therefore, when the door glass 4 vibrates due to a pressure difference between the inside and the outside of the vehicle when the door is closed or when the vehicle is traveling at a high speed in a half-open state of the door glass 4, the seal lips 16, 18, and 19 can effectively absorb kinetic energy generated by displacement of the door glass 4 in the vehicle interior direction and the vehicle exterior direction caused by the vibration. As a result, the occurrence of abnormal noise due to the shake of the door glass 4 can be suppressed.

Further, the arc-shaped end surfaces 16c, 18c, 19c of the seal lips 16, 18, 19 slide in a line contact state instead of in a surface contact sliding manner as in the conventional glass run of the aforementioned patent document 2 with respect to the both side surfaces 4a, 4b of the door glass 4 at the time of lifting, and therefore, the sliding frictional resistance becomes small, and smooth sliding property of the door glass 4 can be obtained.

The above-described setting of the inclination angle in the free state of each of the vehicle interior side seal lips 18, 19 and the vehicle exterior side seal lip 16 is derived by the inventors of the present application from the experimental results of varying the inclination angle θ by various angles, as shown in fig. 7.

That is, when the inclination angle θ of each seal lip 16, 18, 19 is set to about 60 degrees, as shown by the broken line in fig. 7, the rise of the pressing force, which is the reaction force at the initial stage of sliding (initial contact T) of the respective distal end portions 16b, 18b, 19b with the both side surfaces 4a, 4b of the door glass 4, becomes low. Thus, the water tightness, that is, the sealing property against the door glass 4 is deteriorated, and there is a possibility of water leakage. Further, since the pressing force obtained by the sealing lips 16, 18, 19 is not increased but is low, the force absorbing the reaction force of the above-described door glass 4 is weak, and the vibration cannot be effectively suppressed.

When the inclination angle θ of each seal lip 16, 18, 19 is set to about 80 degrees, as shown by the one-dot chain line in fig. 7, the rise in pressing force at the initial stage (T) of sliding of the both side surfaces 4a, 4b of the door glass 4 is rapidly increased due to the large angle of each seal lip 16, 18, 19, and the distal end portions 16b, 18b, 19 b. Therefore, although the sealing property between the door glass 4 by the respective sealing lips 16, 18, 19 can be ensured, the high pressing force of the respective sealing lips 16, 18, 19 against the door glass 4 is maintained later. Therefore, it is found that the sliding frictional resistance against the door glass 4 is excessively large, and smooth sliding properties at the time of lifting and lowering the door glass 4 cannot be obtained.

When the inclination angle θ of each seal lip 16, 18, 19 is set to 70 degrees, as shown by the solid line in fig. 7, the rise in the pressing force at the initial stage (T) of sliding of each seal lip 16, 18, 19 with respect to the door glass 4 increases similarly to the case where the inclination angle θ is set to about 80 degrees. Thus, the sealing property between the door glass 4 obtained by the respective sealing lips 16, 18, 19 can be ensured. Then, since the pressing force of each seal lip 16, 18, 19 is smoothly reduced, the sliding frictional resistance of the end portions 16b, 18b, 19b of each seal lip 16, 18, 19 to the both side surfaces 4a, 4b of the door glass 4 is reduced, and smooth sliding property can be obtained. The same results were obtained for the front-to-back angle of the tilt angle of 70 degrees.

Accordingly, in the present invention, the inclination angle of each seal lip is set to about 65 degrees to 75 degrees, and in the present embodiment, about 70 degrees.

The reason why the radius of curvature of the arc-shaped contact surfaces 16d, 18d, 19d of the seal lips 16, 18, 19 is set to about 40R as described above is also based on the experiments of the inventors of the present application, because the seal points (P position in fig. 4) which are the contact positions of the end surfaces 16c, 18c, 19c of the seal lips 16, 18, 19 with respect to the both side surfaces 4a, 4b of the door glass 4 in the initial state do not move significantly due to the vibration of the door glass 4.

That is, as shown in fig. 4, the door glass 4 is made to enter in the direction of the bottom wall 11 of the glass run channel 5, and in an initial state in which the end surfaces 16c, 18c, 19c of the outside seal lip 16 and the inside seal lips 18, 19 are brought into contact with the both side surfaces 4a, 4b of the door glass 4 in a line contact state, the seal points P are in the range of the end surfaces 16c, 18c, 19 c.

From this state, when vibration is applied to the door glass 4, as seen from the sealing points of the vehicle outside seal lip 16 and the vehicle inside seal lips 18 and 19 with respect to the both side surfaces 4a and 4b of the door glass 4, as shown in fig. 5, it is seen that the respective sealing points P1 are slightly offset to the side of the respective contact surfaces 16d, 18d and 19d but are substantially at the same position as the respective sealing points P in the initial state.

On the other hand, it is clear that when the radius of curvature of the contact surfaces 16d, 18d, 19d is set to a value different from about 40R, that is, to a value smaller than 35R to 45R or to a value larger than 35R, the sealing point P is greatly moved in the direction of the base end portions 16a, 18a, 19a or the contact surfaces 16d, 18d, 19d are in flat contact with the both side surfaces 4a, 4b of the door glass 4 when the door glass 4 vibrates in the vehicle interior-exterior direction.

In this way, if the sealing point P moves greatly, the pressing force characteristic with respect to the door glass 4 may change, and there is a possibility that the sealing properties obtained by the respective sealing lips 16, 18, 19 may become unstable.

When the radius of curvature is set to about 40R, as shown in fig. 5, each sealing point P1 is slightly moved from each sealing point P of the first end surfaces 16c, 18c, 19c but not substantially moved, and becomes substantially the same position as the first sealing point P.

In a state where the door glass 4 is greatly vibrated and the seal lips 16, 18, 19 are maximally inclined as shown in fig. 6, the contact surfaces 16d, 18d, 19d contact the both side surfaces 4a, 4b of the door glass 4, and the seal points P2 are slightly moved from the initial seal points P toward the base end portions 16a, 18a, 19 a.

Therefore, in the present embodiment, the radius of curvature of each of the contact surfaces 16d, 18d, 19d is set to about 40R. Thus, stable and good sealing performance against both side surfaces 4a, 4b of the door glass 4 can be obtained by the respective sealing lips 16, 18, 19.

As shown in fig. 6, when the distal end portions 18b, 19b are brought into sliding contact with the other side surface 4b of the door glass 4 in response to vibration of the door glass 4, the respective vehicle interior seal lips 18, 19 do not interfere with each other even when they are tilted toward the inner side surface 13a of the vehicle interior side wall 13 via the notched portions 20, 21, and therefore, the abutment reaction force against the door glass 4 does not change. This ensures stable and smooth sliding of the door glass 4 when the door glass is lifted and lowered.

In other words, when the two inner seal lips 18, 19 are inclined in the direction of the inner surface 13a of the inner side wall 13, if the distal end portion 18b of the inner seal lip 18 on the distal end portion 13b side (lower side) overlaps with the upper inner seal lip 19 to interfere with each other, the pressing force (reaction force) of the lower inner seal lip 18 against the door glass 4 may excessively increase, and there is a possibility that smooth sliding performance at the time of lifting and lowering the door glass 4 may not be obtained. Further, the door glass 4 may not sufficiently secure the movable region toward the vehicle interior side due to the overlapping of the vehicle interior side seal lips 18, 19.

However, in the present embodiment, the lower vehicle interior seal lip 18 does not interfere with the upper vehicle interior seal lip 19, and the reaction force against the door glass 4 does not become large, so that stable and smooth sliding properties can be obtained when the door glass 4 is lifted and the movable region of the door glass 4 toward the vehicle interior can be increased.

Further, in the present embodiment, since the wavy protruding portions 12f, 13g are formed on the respective inner surfaces 12a, 13a of the vehicle exterior side wall 12 and the vehicle interior side wall 13, respectively, as shown in fig. 6, the respective vehicle interior seal lips 18, 19 and the vehicle exterior seal lip 16 come into contact with the respective protruding portions 12f, 13g when the pressing force generated by the vibration of the door glass 4 is excessively displaced toward the vehicle exterior side and the vehicle interior side and falls toward the respective inner surfaces 12a, 13a, and can be quickly separated from the respective inner surfaces 12a, 13a without being in close contact with each other, thereby preventing the occurrence of contact and separation sounds of the seal lips 18, 19, and having good recovery to the original position. Accordingly, the sealing lips 16, 18, 19 are quickly abutted to improve the sealing performance and the silencing performance with respect to the door glass 4.

[ embodiment 2 ]

Fig. 8 to 11 show embodiment 2 of the present invention, which has the same basic configuration as embodiment 1, except that 1 outside seal lip 16 is added and 2 outside seal lips are provided.

That is, as shown in fig. 8 and 9, in addition to the vehicle outside seal lip 16 on the distal end portion 12b side of the vehicle outside side wall 12, a 2 nd vehicle outside seal lip 22 is provided at a predetermined position of the inner side surface 12a of the vehicle outside side wall 12, that is, at a position facing the 2 nd vehicle inside seal lip 19 provided on the inner side surface 13a of the vehicle inside side wall 13.

The shape and size of the 2 nd vehicle outside seal lip 22, the inclination angle of about 70 degrees, the arc-shaped formation of the distal end surface 22c of the distal end portion 22b, the radius of curvature of the arc-shaped abutment surface 22d, and the like are the same as those of the 1 st vehicle outside seal lip 16. In addition, the 2 nd vehicle outside seal lip 22 is formed at the following positions: as shown in fig. 11, when the door glass 4 vibrates, the door glass is largely inclined toward the inner side surface 12a side by the notch portion 23 provided at the base end portion 22a, and at this time, does not interfere with the 1 st vehicle outside seal lip 16.

Further, a wave-shaped convex portion 12g capable of abutting against the 2 nd vehicle outside seal lip 22 is formed on the inner side surface 12a of the vehicle outside side wall 12.

In embodiment 2, by adding the 2 nd outside seal lip 22, the sealability between the door glass 4 is improved, and the kinetic energy generated by the displacement of the door glass 4 toward the vehicle outside when the door glass 4 is closed in the half-open state or when traveling at high speed is received and absorbed by the 2 nd outside seal lip 22 in the line contact state and the propped state in addition to the 1 st outside seal lip 16, so that the occurrence of rattling can be further effectively suppressed. As a result, the occurrence of abnormal noise due to jitter can be suppressed.

Further, since the radius of curvature of each arc-shaped abutment surface 22d of each outboard seal lip 22 is also set to 40R, the sealing point P2 slightly moves from the sealing point P with the first end surface 22c but does not move significantly due to the vibration of the door glass 4 as shown in fig. 10. Thus, stable and good sealing performance against both side surfaces 4a, 4b of the door glass 4 can be obtained by the respective sealing lips 16, 22, 18, 19.

Further, as shown in fig. 11, the respective vehicle outside seal lips 16, 22 do not interfere with each other even when they are tilted toward the inner side surface 12a of the vehicle outside side wall 12 via the respective notch portions 17, 23 when the tip end surfaces 16c, 22c of the tip end portions 16b, 22b are in sliding contact with the one side surface 4a of the door glass 4, and therefore, the abutment reaction force against the door glass 4 does not change as in the case of the respective vehicle inside seal lips 18, 19 described above. Thus, the door glass 4 can always ensure stable and smooth sliding properties, and a large movable area of the door glass 4 can be obtained.

Since the other configurations are the same as those of embodiment 1, the same technical effects as those of embodiment 1 can be obtained.

The present invention is not limited to the configuration of the above embodiment, and for example, the cross-sectional shape of the glass run 5, that is, the cross-sectional shape such as the length of the bottom wall 11 or the vehicle interior and vehicle exterior side walls 12, 13 may be arbitrarily changed according to the shape, size, or the like of the vehicle body. The number of the inboard seal lips 18, 19 or the outboard seal lip 16 may be further arbitrarily increased.

Description of the reference numerals

1 … front door

2 … door main body

3 … Window frame part

4 … door glass

5 … glass guide groove

11 … bottom wall

11a … inner bottom surface

12 … vehicle exterior side wall

12a … inner side

12b … end portion

13 … vehicle interior side wall

13a … inner side

13b … end portion

16 … vehicle-1 outside seal lip

16a … base end portion

16b … end portion

16c … end face

16d … abutment surface

17 … notch (thin wall part)

18 … 1 st vehicle interior side seal lip

18a … base end portion

18b … end portion

18c … end face

18d … abutment surface

19 … No. 2 inner side sealing lip

19a … base end portion

19b … end portion

19c … end face

19d … abutment surface

20. 21 … notch (thin wall)

22 … No. 2 vehicle outside sealing lip

22a … base end portion

22b … end portion

22c … end face

22d … contact surface

P, P1, P2 … sealing point

Claims (6)

1. A glass run comprising a bottom wall, an inside side wall, an outside side wall, an inside seal lip, and an outside seal lip, wherein the inside side wall and the outside side wall are provided at both edges in a width direction of the bottom wall, the inside seal lip is provided on an inside surface side of the inside side wall with at least 2 or more and protrudes obliquely in a direction toward the outside side wall, the outside seal lip is provided on an inside surface side of the outside side wall with at least 1 or more and protrudes obliquely in a direction toward the inside side wall, both side surfaces of a door glass which enters in a direction toward the bottom wall are supported in a sliding state by a distal end portion of each of the inside seal lip and a distal end portion of the outside seal lip,

the vehicle interior side seal lip and the vehicle exterior side seal lip are formed in a straight line toward the vehicle exterior side wall and the vehicle interior side wall, respectively, and the end surfaces of the end portions formed in a circular arc shape in cross section are slidable on both side surfaces of the door glass in a line contact state, and the vehicle interior side seal lip and the vehicle exterior side seal lip are formed with thin wall portions capable of tilting the vehicle interior side seal lip and the vehicle exterior side seal lip in directions toward the inner surfaces of the vehicle interior side wall and the vehicle exterior side wall, respectively, at the respective base end portions joined to the vehicle interior side wall and the vehicle exterior side wall.

2. The glass run according to claim 1, wherein,

the inner seal lips are provided at positions which do not interfere with each other when the thin portions are tilted toward the inner side wall with the end faces of the end portions abutting against the side surfaces of the door glass.

3. The glass run according to claim 1, wherein,

the vehicle outside seal lip and each of the vehicle inside seal lips are set as: the rising inclination angle in the free state before the end surfaces of the respective end portions come into contact with the both side surfaces of the door glass is about 65 degrees to 75 degrees with respect to the entry direction line of the door glass.

4. The glass run according to claim 1, wherein,

an abutment surface of the vehicle-outside seal lip extending in a direction from the base end portion toward the distal end surface and being capable of abutting against one side surface of the door glass is formed in an arc shape along the extending direction,

on the other hand, each contact surface of each of the vehicle interior seal lips extending from the respective base end portions in the direction of each of the distal end surfaces and being capable of being brought into contact with the other side surface of the door glass is formed in an arc shape along the extending direction.

5. The glass run as defined in claim 4, wherein,

the radius of curvature of the arc-shaped contact surface of the vehicle-outside seal lip and the arc-shaped contact surface of each of the vehicle-inside seal lips are set to be in the range of about 35R to 45R.

6. The glass run according to claim 1, wherein,

the inside surface of the vehicle outside side wall is provided with a 2 nd vehicle outside seal lip in addition to the vehicle outside seal lip, the 2 nd vehicle outside seal lip is formed in the same structure as the vehicle outside seal lip, and each of the vehicle outside seal lips is provided on: and a position where the thin portion provided by the base end portion of the vehicle outside seal lip and the thin portion provided by the base end portion of the 2 nd vehicle outside seal lip do not interfere with each other when the respective end surfaces of the respective end portions come into contact with the side surface of the door glass.